7=-r+2

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Solution for 7=-r+2 equation: 



7=-r+2

We move all terms to the left:

7-(-r+2)=0

We add all the numbers together, and all the variables

-(-1r+2)+7=0

We get rid of parentheses

1r-2+7=0

We add all the numbers together, and all the variables

r+5=0

We move all terms containing r to the left, all other terms to the right

r=-5

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